Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-27856

Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can use this to determine the configured credentials. Figuring out the credential will lead into full access to the affected component. Limit access to the doveadm http service port, install fixed version. No publicly available exploits are known.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 8.7%
CVSS Severity
CVSS v3 Score 7.4
Products affected by CVE-2026-27856


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